CN109994999A - Protection control device and its control method for power conversion circuit - Google Patents

Protection control device and its control method for power conversion circuit Download PDF

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Publication number
CN109994999A
CN109994999A CN201811590349.XA CN201811590349A CN109994999A CN 109994999 A CN109994999 A CN 109994999A CN 201811590349 A CN201811590349 A CN 201811590349A CN 109994999 A CN109994999 A CN 109994999A
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China
Prior art keywords
signal
refusal
communication controler
communication
bit array
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Granted
Application number
CN201811590349.XA
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Chinese (zh)
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CN109994999B (en
Inventor
大石真
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Toyota Motor Corp
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Toyota Motor Corp
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0766—Error or fault reporting or storing
    • G06F11/0781—Error filtering or prioritizing based on a policy defined by the user or on a policy defined by a hardware/software module, e.g. according to a severity level
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/02—Comparing digital values
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
    • H02H7/1255—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to internal faults, e.g. by monitoring ripple in output voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L5/00—Automatic control of voltage, current, or power
    • H03L5/02—Automatic control of voltage, current, or power of power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33515—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control

Abstract

This disclosure relates to the protection control devices and its control method for power conversion circuit.Protection control device includes computer, communication controler and closing circuit.Computer monitor is sent to the fault-signal of the first signal wire of the first number from power conversion circuit, and creates the refusal information for indicating that each fault-signal is activated or is rejected.Communication controler receives refusal information from computer via the communication line of the second number less than the first number, and refusal signal is sent to the second signal line of the first number based on refusal information.It closes circuit to be arranged in chip/module identical with communication controler, and based on the fault-signal of the first signal wire from the first number and the refusal signal of the second signal line from the first number permits driving to power conversion circuit or closing power conversion circuit.

Description

Protection control device and its control method for power conversion circuit
Technical field
The present invention relates to the protection control device for power conversion circuit and for the protection control of power conversion circuit The control method of device.
Background technique
An example of the protection control device for power conversion circuit has been proposed, which includes Computing unit (central processing unit (CPU)) and logic circuit are (see, for example, Japan patent applicant announce the 2009-201195th (JP2009-201195A)).Computing unit (CPU) is based in the power supply line for carrying out self-test power conversion circuit (converter) The overvoltage signal of overvoltage detection circuit of overvoltage generate the close command signals for power conversion circuit, and Close command signals are exported to power conversion circuit via the first signal wire.Logic circuit is based on when overvoltage signal is generated Output signal (close command signals of power conversion circuit or refusal signal) from computing unit and come from Zenith tracking The output signal of circuit outputs it to generate the close command signals for power conversion circuit via second signal line To power conversion circuit.In the apparatus, even if any one generation in the first signal wire and second signal line such as disconnects In the case where the exception of connection, close command signals can also be sent to power conversion circuit.
Summary of the invention
In the protection control device as described above for power conversion circuit, with the closing of power conversion circuit Command signal and the type of refusal signal increase, and the number and connection for connecting the signal wire of computing unit and power conversion circuit are counted The number for calculating the signal wire of unit and logic circuit also increases, this causes failure rate to increase.
The present invention provides a kind of protection control device for power conversion circuit and for the protection of power conversion circuit The control method of control device, the protection control device is in the close command signals of power conversion circuit and the type of refusal signal Inhibit the increase of failure rate in increased situation.
The protection control device for power conversion circuit according to a first aspect of the present invention includes computer, communication control Device and closing circuit.Computer be configured to monitor from power conversion circuit be sent to the first number the first signal wire it is multiple Fault-signal, and create the refusal information that each fault-signal in instruction fault-signal is activated or is rejected.It is logical Letter controller is configured to: being received from computer about each fault-signal in fault-signal via the communication line of the second number Refusal information, and multiple refusal signals are sent to by the second signal lines of the first number based on refusal information.Second number Less than the first number.It closes circuit to be arranged on chip identical with communication controler or identical module, and is configured to: Based on the received fault-signal of the first signal wire from the first number and the received refusal letter of the second signal line from the first number Number permits driving to power conversion circuit or close power conversion circuit.
Using configuration above, the number (the second number) of communication line can be made relatively small, and the number of communication line exists It may be less likely in number (the first number) increased situation of first signal wire or second signal line or be less likely to increase；Cause This, failure rate may be less likely to or be less likely to increase.Further, since the number of the first signal wire is equal to the number of second signal line Mesh, thus with the number of second signal line less than the first signal wire number the case where (for example, there is only a second signals When line) it is different, it prevents from refusing two or more fault-signals in the case where any of second signal line is abnormal (all fault-signals when there is only a second signal line).
In the protection control device of above-mentioned aspect according to the present invention, every group corresponding with the first number can be directed to The position of predetermined number carries out the communication between Computers and Communication controller.Therefore, it can be directed to and the first number (fault-signal Type number) position of corresponding every group of predetermined number communicated.
In the protection control device of above-mentioned aspect according to the present invention, the second number can be determined as steady state value, and Regardless of the first number.Therefore, the number (the second number) of communication line can be made in the first signal wire or second signal line It may be less likely in number (the first number) increased situation or be less likely to increase.In this case, the second number can be by It is set as value 4 or smaller.
In the protection control device of above-mentioned aspect according to the present invention, computer be may be configured to: will be had respectively The first bit array including refusing the position of information is sent to communication controler, and the second bit array is then sent to communication control Device.Communication controler may be configured to store each position in the position for including in the first bit array when receiving the first bit array Refusal information, and be configured to that the refusal message reflection of the storage of each of position exists when receiving the second bit array Refuse in the corresponding refusal signal in signal.Therefore, pass through transmission (the two steps biography of the first bit array and the second bit array Send), each refusal information can be reflected by the corresponding refusal signal in refusal signal.In this case, second Bit array can not include the refusal information of each of position.
In this case, when receiving the first bit array, communication controler may be configured to will have respective packet The response bit array of position for including refusal information sends back to computer, and when receiving response bit array, and computer can be with It is configured to: will be in the position for including in the refusal information of each of position for including in the first bit array and response bit array Each refusal information is compared, and in the refusal information in the first bit array and the refusal information in response bit array When consistent, the second bit array is sent to communication controler.In addition, when receiving the second bit array, communication controler can be with It is configured to: by the refusal message reflection of each of position in the corresponding refusal signal in refusal signal, and will Reflection bit array sends back to computer, and it includes each refusal signal about in refusal signal that reflection bit array, which has respectively, Reflect the position of result；And when receiving reflection bit array, computer be may be configured to: will include in the first bit array Position each of refusal information with include reflect bit array in reflection result be compared.In addition, computer can be with It is configured to: after the second bit array is sent to communication controler, third bit array being sent to communication controler, third It includes the position of the refusal information-related with the refusal of each of position for information about that bit array, which has respectively,；And it is receiving When third bit array, communication controler be may be configured to: the refusal of each of position for including in the first bit array is believed Breath is compared for information about to the refusal of the corresponding position in the position for including in third bit array, and via third signal Comparison result is sent to computer by line.In addition, computer may be configured to: the second bit array is being sent to communication control After device, third bit array is sent to communication controler, it includes refusing with each of position that third bit array, which has respectively, The position of refusal information-related absolutely for information about；And when receiving third bit array, communication controler be may be configured to: By each position in the position for including in the refusal information of each of position for including in the first bit array or third bit array Refusal be compared for information about to the reflection result of refusal information in the corresponding refusal signal in refusal signal, and And comparison result is sent to computer via third signal wire.In addition, computer may be configured to: monitoring is for license pair First command signal of the driving of power conversion circuit or the second command signal for closing power conversion circuit, from pass Closed circuit is sent to power conversion circuit.In addition, communication controler may be configured to determine when receiving to oriented array Whether it has been received normally to oriented array.Using these configurations, the communication between Computers and Communication controller can be determined Whether it is normally carried out, and the reliability of the communication between Computers and Communication controller can be improved.In these cases, it counts Calculation machine may be configured to store exception in the case where detecting the exception of the communication between Computers and Communication controller Testing result.In this way it is possible to which operator is made to know exception history during maintenance.
In the protection control device of above-mentioned aspect according to the present invention, computer be may be configured to: will be had respectively Bit array including refusing the position of information is sent to communication controler；And when receiving bit array, communication controler can be with It is configured to: by a corresponding refusal of the refusal message reflection of each of position for including in bit array in refusal signal In signal.Using this configuration, each refusal information can be easily by refusing signal reflection accordingly.
In this case, when receiving bit array, communication controler be may be configured to: by each of position Refuse message reflection in the corresponding refusal signal in refusal signal, and reflection bit array is sent back into computer, Reflection bit array have respectively include about refusal signal in each refusal signal reflection result position；And it is receiving Reflect bit array when, computer may be configured to: by the refusal information of each of position for including in bit array with include Reflection result in reflection bit array is compared.In addition, communication controler may be configured to: via third signal wire to Whether computer transmits the refusal information about each of position by the corresponding refusal signal reflection in refusal signal Information.In addition, computer may be configured to monitoring for permit driving to power conversion circuit the first command signal or Person is used to close the second command signal of power conversion circuit.First command signal and the second command signal are sent from circuit is closed To power conversion circuit.In addition, communication controler may be configured to determine to oriented array when receiving to oriented array Whether it has been received normally.Using these configurations, can determine communication between Computers and Communication controller whether normally into Row, and the reliability of the communication between Computers and Communication controller can be improved.In these cases, in COMPUTER DETECTION In the case where the communication abnormality between Computers and Communication controller, computer can store the testing result of communication abnormality. In this way it is possible to which operator is made to know exception history during maintenance.
The second aspect of the present invention provides a kind of control method of protection control device for power conversion circuit.It protects Shield control device includes computer, communication controler and closes circuit, closes circuit and is arranged in core identical with communication controler On piece or identical module.Control method includes: to be sent to the of the first number from power conversion circuit by computer monitor Multiple fault-signals of one signal wire, and each fault-signal created in instruction fault-signal is activated or is rejected Refusal information；It is received from computer about each of fault-signal by communication controler via the communication line of the second number The refusal information of fault-signal, and multiple refusal signals are sent to by the second signal lines of the first number based on refusal information； And by closing second letter of the circuit based on the received fault-signal of the first signal wire from the first number and from the first number The received refusal signal of number line permits the driving to power conversion circuit or closes power conversion circuit.Second number is less than First number.
Detailed description of the invention
Below with reference to accompanying drawings come describe exemplary embodiments of the present invention feature, advantage and technology and industry meaning Justice, identical appended drawing reference indicates identical element in the accompanying drawings, and in the accompanying drawings:
Fig. 1 is schematically shown including the protection according to the first embodiment of the present invention for power conversion circuit The figure of the configuration of the drive system of control device；
Fig. 2 is the figure for schematically showing the configuration of electronic control unit；
Fig. 3 is an exemplary stream for showing the control routine of the microcomputer and communication controler of first embodiment Cheng Tu；
Fig. 4 is an exemplary explanatory diagram for showing the content of the first transmission packet and the first response bag；
Fig. 5 is an exemplary explanatory diagram for showing the content of the first transmission packet and the first response bag；
Fig. 6 is to show that the communication mode that transmission order carries out is arranged according to RG between microcomputer and communication controler One exemplary explanatory diagram；
Fig. 7 is an exemplary explanatory diagram for showing the content of communication monitoring processing；
Fig. 8 is an exemplary explanatory diagram for showing the scope of examination of the first response bag；
Fig. 9 is an exemplary explanatory diagram for showing the content of the second transmission packet and the second response bag；
Figure 10 is an exemplary explanatory diagram for showing the content of the second transmission packet and the second response bag；
Figure 11 is to show that the communication mode that reflection order carries out is arranged according to RG between microcomputer and communication controler An exemplary explanatory diagram；
Figure 12 is an exemplary explanatory diagram for showing the scope of examination of the second response bag；
Figure 13 is an exemplary explanatory diagram for showing the operation of power conversion circuit and electronic control unit；
Figure 14 is an exemplary process for showing the control routine of the microcomputer and communication controler of modified example Figure；
Figure 15 is an exemplary explanatory diagram for showing the content of third transmission packet and third response bag；
Figure 16 is an exemplary explanatory diagram for showing the scope of examination of third response bag；
Figure 17 is to show one of the operation of power conversion circuit and electronic control unit in the case where modified example to show The explanatory diagram of example；
Figure 18 is the figure for schematically showing the configuration of electronic control unit of modified example；
Figure 19 is the figure for schematically showing the configuration of electronic control unit of another modified example；
Figure 20 is the figure for schematically showing the configuration of electronic control unit of another modified example；
Figure 21 is the figure for schematically showing the configuration of the electronic control unit according to second embodiment；
Figure 22 is that one of the control routine for showing the microcomputer and communication controler of second embodiment is exemplary Flow chart；
Figure 23 is an exemplary explanatory diagram for showing the content of the 4th packet, the 5th packet and the 6th packet；
Figure 24 is an exemplary explanatory diagram for showing the content of communication monitoring processing；
Figure 25 is that one of the operation for showing the power conversion circuit and electronic control unit of second embodiment is exemplary Explanatory diagram；
Figure 26 is an exemplary process for showing the control routine of the microcomputer and communication controler of modified example Figure；
Figure 27 is an exemplary explanation for showing the operation of the power conversion circuit and electronic control unit of modified example Figure；
Figure 28 is the figure for schematically showing the configuration of electronic control unit of modified example；
Figure 29 is an exemplary process for showing the control routine of the microcomputer and communication controler of modified example Figure；
Figure 30 is another exemplary process for showing the control routine of the microcomputer and communication controler of modified example Figure；
Figure 31 is the figure for schematically showing the configuration of electronic control unit of third embodiment；
Figure 32 is that one of the control routine for showing the microcomputer and communication controler of third embodiment is exemplary Flow chart；And
Figure 33 is that one of the operation for showing the power conversion circuit and electronic control unit of third embodiment is exemplary Explanatory diagram.
Specific embodiment
Next, some embodiments of the present invention will be described.
First embodiment
Fig. 1 is schematically shown including the protection for power conversion circuit as first embodiment of the invention The configuration of the drive system 10 of control device.Fig. 2 schematically shows the configurations of electronic control unit 20.As shown in Figure 1, driving Dynamic system 10 includes motor 11, power conversion circuit 12, battery 13 and electronic control unit 20.In the first embodiment, electric Power conversion circuit 12 (inverter 12a and boost converter 12b) is the example of " power conversion circuit ", and electronic control unit 20 be the example of " the protection control device for power conversion circuit ".
Motor 11 is for example in the form of synchronous generator-motor.Power conversion circuit 12 includes inverter 12a and boosting Converter 12b.Inverter 12a including two or more switchgears (for example, six switchgears) passes through switchgear Switching the direct current power of power line 15 is converted into AC power, and drive motor 11.Including two or more switches The boost converter 12b of equipment (for example, two switchgears) increases the electricity connecting with battery 13 by the switching of switchgear The voltage of the electric power of the line of force 16, and power line 15 is supplied power to by obtained.Battery 13 is for example in lithium ion secondary electricity The form of pond or nickel-hydrogen secondary cell.Electronic control unit 20 executes switching to each switchgear of power conversion circuit 12 It controls (drive control), or closes and (stop driving) power conversion circuit 12.
As shown in Fig. 2, electronic control unit 20 is including microcomputer 22 and has communication controler 30 and closing unit 40 protection controller 29.
Power conversion circuit 12 is connected to the closing unit 40 of protection controller 29 via " n " signal line 18, and will Fault-signal FAIL [1] to FAIL [n] is sent to " n " signal line 18.Value " n " is the fault type of power conversion circuit 12 Number, and the number 1 in each square brackets [] corresponds to every kind of fault type to " n ".Fault type above may include Such as overcurrent, overheat, open-circuit fault and closing fault, the mistake of power line 15 of each switchgear of power conversion circuit 12 Voltage, overvoltage of power line 16 etc..When there is no correspond to digital " i " (i:1 to n) failure when, power conversion circuit 12 set fault-signal FAIL [i] to the high level signal of logic level.When occurring to correspond to the failure of digital " i ", electricity Power conversion circuit 12 sets fault-signal FAIL [i] to the low level signal of logic level.
Microcomputer 22 is configured to a chip, and has central processing unit (CPU) (not shown) as it Main component.Microcomputer 22 further include the read-only memory (ROM) of storage processing program, interim storing data at random deposit Access to memory (RAM), input and output port and communication port and CPU.Microcomputer 22 comes via input port reception The rotation position of the rotor of self-test motor 11, the phase current of every phase of motor 11, power line 15,16 voltage etc. various biographies The signal of sensor.Switch-over control signal is exported accordingly opening to power conversion circuit 12 via output port by microcomputer 22 Close equipment.Outputting and inputting for these signals does not constitute core of the invention, therefore, will not be described in detail further.
The fault-signal FAIL [1] to FAIL [n] of monitoring " n " signal line 18 of microcomputer 22.In addition, miniature calculating Machine 22 is connected to the communication controler 30 of protection controller 29 via four communication lines 24 for being less than " n " in number.First In embodiment, four communication lines 24 from for from microcomputer 22 to 30 transmission chip selection signal of communication controler, when Three communication lines (CS, CLK, SDI) of clock signal and the bit array of order (bit array) (packet (packet)) and for that will make It is formed for the bit array (packet) of reply from the communication line (SDO) that communication controler 30 sends back to microcomputer 22.This Outside, microcomputer 22 is determined based on fault-signal FAIL [1] to FAIL [n] in fault-signal FAIL [1] to FAIL [n] Each be (enable) is activated still to be rejected, and via communication line 24 using definitive result as refusal information RGi [1] Communication controler 30 is sent to RGi [n].
Protection controller 29 is configured to specific integrated circuit (ASIC) (chip).As described above, protection control The communication controler 30 of device 29 processed is connected to microcomputer 22 (allow the communication between chip) via four communication lines 24, And refusal information RGi [1] to RGi [n] is received from microcomputer 22.In addition, communication controler 30 is via " n " signal line 38 are connected to closing unit 40, and will refuse signal RG [1] based on refusal information RGi [1] to RGi [n] and be sent to RG [n] " n " signal line 38.In order to enable, corresponding to digital " i ", (the fault-signal FAIL [i] of i:1 to n), communication controler 30 will be refused Exhausted signal RG [i] is set as the low level signal of logic level.In order to refuse the fault-signal that (shielding) corresponds to digital " i " FAIL [i], communication controler 30 will refuse the high level signal that signal RG [i] is set as logic level.
In addition, communication controler 30 include the receiving unit 31 as functional block, it is response unit 32, storage unit 33, anti- Reflect unit 34 and monitoring unit 35.Receiving unit 31 receives the bit array (packet) from microcomputer 22, and is latched (interim storage) is in the first area of RAM (not shown).Response unit 32 sends back packet as (answerback) is replied To microcomputer 22.The refusal information RGi [1] to RGi [n] that storage unit 33 is included in the bit array (packet) of latch is deposited Storage is in the second area of RAM.The refusal information RGi [1] to RGi [n] of storage is reflected in refusal signal RG by reflection unit 34 [1] into RG [n].Monitoring unit 35 monitors the communication via communication line 24 and microcomputer 22.
The closing unit 40 of protection controller 29 is configured as logic circuit, and including having " n " a or (OR) circuit The rejector circuit 42 of 43 [1] to 43 [n] and there is determination circuit 44 with (AND) circuit 45.
Rejector circuit 42 is connected to power conversion circuit 12 via " n " signal line 18, and via " n " signal line 38 It is connected to communication controler 30.In addition, rejector circuit 42 is connected to determining circuit 44 via " n " signal line 48.Rejector circuit (i:1 to n) is believing via corresponding signal wire 18 from the received failure of power conversion circuit 12 each OR circuit 43 [i] in 42 Number FAIL [i] and via corresponding signal wire 38 it is from least one of received refusal signal RG [i] of communication controler 30 The M signal MI [i] for being sent to corresponding signal wire 48 is set in the case where high level signal the high level of logic level Signal.Each OR circuit 43 [i] is the case where both fault-signal FAIL [i] and refusal signal RG [i] are low level signals The lower low level signal for setting M signal MI [i] to logic level.
It determines that circuit 44 is connected to rejector circuit 42 via " n " signal line 48, and is connected via individual signals line 49 To power conversion circuit 12.Determine that the AND circuit 45 of circuit 44 is being received via signal wire 48 from OR circuit 43 [1] to 43 [n] Protection control letter of all M signal MI [1] to MI [n] all for signal wire 49 will be sent in the case where high level signal Number it is set as the high level signal of logic level.AND circuit 45 is low at least one of M signal MI [1] to MI [n] Protection control signal is set in the case where level signal the low level signal of logic level.It is set as the protection control of high level Signal processed corresponds to the driving grant commands of the drive control of license power conversion circuit 12, and is set as low level protection It controls signal and corresponds to the shutdown command for closing and (stop driving) power conversion circuit 12.It is high level letter in protection control signal In the case where number (driving grant commands), driving power is converted under the control according to the switching command from microcomputer 22 Circuit 12.In the case where protection control signal is low level signal (shutdown command), miniature calculating is come from regardless of whether existing The switching command of machine 22, power conversion circuit 12 are all closed and (stop driving).
In configured in this way closing unit 40, all fault-signal FAIL [1] from power conversion circuit 12 extremely FAIL [n] all in the case where high level signal (in the case where not breaking down), all M signal MI [1] to MI [n] Become high level signal, and control signal is protected to become high level signal (driving grant commands).
On the other hand, at least one of from the received fault-signal FAIL [1] of power conversion circuit 12 to FAIL [n] In the case where for low level signal (in the case where the failure of at least one type occurs), electronic control unit 20 is grasped as follows Make.Assuming that the fault-signal FAIL [j] (j:1 into " n " one) of digital " j " is low level signal.In this case, exist The refusal signal RG [j] received from communication controler 30 be low level signal in the case where (opened in fault-signal FAIL [j] In the case where), M signal MI [j] becomes low level signal, and protects control signal to become low level signal and (close life It enables).On the other hand, in the case where the refusal signal RG [j] from communication controler 30 is high level signal (in fault-signal In the case that FAIL [j] is rejected), M signal MI [j] becomes high level signal, and if all M signal MI [1] All it is high level signal to MI [n], then control signal is protected to become high level signal (driving grant commands).
Next, the operation of the electronic control unit 20 for the first embodiment that description is configured as described above, especially The control routine of microcomputer 22 and communication controler 30.In being described below of first embodiment, it is assumed that indicate electric power The value " n " of the number of fault type in conversion circuit 12 is 12.Fig. 3 shows microcomputer 22 and communication controler 30 One exemplary flow chart of control routine.In the fault-signal FAIL [1] to FAIL [12] monitored by microcomputer 22 At least one become low level signal in the case where (in the case where the failure of at least one type occurs), start execution figure 3 control routine.
In the control routine of Fig. 3, microcomputer 22 creates refusal information RGi [1] to RGi [12] (step first S100).In this operation, microcomputer 22 determines fault-signal FAIL based on fault-signal FAIL [1] to FAIL [12] [1] it is activated or is rejected to each of FAIL [12], and refusal information RGi [1] is created according to definitive result To RGi [12].In the first embodiment, corresponding to digital " i ", (the fault-signal FAIL [i] of i=1 to n) is high level In the case where signal, or the case where fault-signal FAIL [i] is low level signal and fault-signal FAIL [i] is activated Under, refusal information RGi [i] is arranged to value 0.It is low level signal and fault-signal FAIL [i] at fault-signal FAIL [i] In the case where being rejected, refusal information RGi [i] is arranged to value 1.Based on various types of information, walk lamely according to by determining Whether traveling (limp-hometraveling) of going home is licensed and the result that obtains to determine is low at fault-signal FAIL [i] Fault-signal FAIL [i] is activated or is rejected in the case where level signal.
Then, microcomputer 22 includes refusing the first transmission packet of information RGi [1] to RGi [12] come quasi- by creating Standby RG setting transmission order (step S110), and microcomputer 22 and communication controler 30 execute RG setting transmission order (step S120).Transmission order is set according to RG, the first transmission packet is sent to communication controler 30 by microcomputer 22.Logical Believe in controller 30, receiving unit 31 receives and latch the first transmission packet, and the storage of storage unit 33 is included in the first transmission Refusal information RGi [1] to RGi [12] in packet, at the same response unit 32 using the first response bag as reply A send back to it is miniature Computer 22.
Fig. 4 and Fig. 5 shows an example of the content of the first transmission packet and the first response bag, and Fig. 6 show it is micro- One example of the communication mode that transmission order carries out is set between type computer 22 and communication controler 30 according to RG.Such as Fig. 4 With shown in Fig. 5, each of the first transmission packet and the first response bag are all 15 bits (bit0 to bit14) packets.
The first transmission packet will be described in detail.Bit0 is start bit (position that notice packet starts), and in first embodiment In be arranged to value 1.Bit1 is command bit (meaning that discussed packet is the position of RG setting transmission order), and is implemented first It is arranged to value 0 in mode.Bit2 to bit13 is the position for refusing information RGi [1] to [12] RGi.Bit14 is parity check bit (parity bit), and be arranged based on predetermined form such as even parity check or odd.
The first response bag will be described in detail." bit0 " is start bit, and is arranged to value 1 in the first embodiment. Using bit1 to bit13, returned as it is from the value of the bit1 to bit13 of the transmission packet of microcomputer 22 received first. Bit14 instruction executes the result of a upper order (RG setting transmits order or later by the RG setting reflection order of description). Bit14 is arranged to 1 in the case where a upper order is successfully executed, and is set in the case where a upper order executes failure It is set to value 0.When first time executing RG setting transmission order, since there is no a upper order, therefore bit14 is arranged to value 1.
It is communicated as shown in fig. 6, transmission order is arranged according to RG between microcomputer 22 and communication controler 30 When, it is micro- after chip select signal is switched to low level signal from the high level signal of logic level by microcomputer 22 Type computer 22 is exported by switching between the low level signal and high level signal of logic level as clock signal The signal of 16 clocks (pulse) with clock cycle Tc, then switches to high level signal for chip select signal.In addition, Microcomputer 22 at the following time wrapped (such as above in figures 4 and 5 with the first transmission of sequence transmission of bit0 to bit14 by section Described packet): half week from the substantially early clock cycle Tc of rising of first clock than clock signal of the period The time point of phase to time substantially identical with the 15th decline of clock of clock signal.In communication controler 30, connect Unit 31 is received to rise the corresponding time at position that identification and latching just is being received corresponding to clock signal (bit0 is extremely Bit14), and storage unit 33 stores the refusal information RGi [1] in the position that is latched (bit2 is extremely to the positions of [12] RGi bit13).In addition, section with the sequence of bit0 to bit14 sends back first to the response unit 32 of communication controler 30 at the following time Response bag (as above in figures 4 and 5 described in wrap): the period basically with first clock of clock signal Decline the identical time to the time substantially identical with the 16th decline of clock of clock signal.
When completing the execution of RG setting transmission order in the step s 120, communication controler 30 executes communication monitoring processing, To determine whether the first transmission packet has been received normally (step S130, S140).Fig. 7 shows the content of communication monitoring processing One example.As shown in fig. 7, executing inter-packet gap monitoring, even-odd check monitoring, header (header) in communication monitoring processing Monitoring, clock number monitoring and data monitoring.
In inter-packet gap monitoring, monitor that (high level signal continues for the interval of the low level signal in chip select signal Time), and the interval of low level signal be shorter than predetermined time Tint (for example, 90 milliseconds (msec) or 100 milliseconds, or 110 milliseconds) in the case where determine that the interval of low level signal is normal, and be equal or longer than at the interval of low level signal Determine that the interval of low level signal is abnormal in the case where predetermined time Tint.
In packet even-odd check monitoring, as soon as often receive packet, using the position for undergoing parity check, (bit0 is extremely Bit13) and parity check bit (bit14) monitors parity check bit.Parity check bit is in the case where it is OK (at it and in advance In the matched situation of setting formula) it is confirmed as normally, and in the case where it is NG (in it and the unmatched feelings of predetermined form Under condition) it is confirmed as exception.
In packet head monitoring, as soon as often receive packet, monitoring start bit and command bit, and start bit and order Position is confirmed as normally in the case where they are given combination (for example, in RG setting transmission orders " 1 " and " 0 "), and It is confirmed as exception in the case where they are not given combinations.
In the monitoring of packet clock number, as soon as often receive packet, watchdog timer number, and when the number of clock is 16 It determines that clock number is normal, and determines clock number exception when clock number is not 16.
In bag data monitoring, as soon as often receive packet, monitoring data bit.It is set in current time immediately in RG is completed In the case where setting after the execution of transmission order, ignore data monitoring (uncertain data position is normal or abnormal).Current In the case that time is after the execution for completing later to order the RG setting reflection of description, data bit is in all bit2 All be to bit13 be confirmed as in the case where zero it is normal, and the case where any of " bit2 " to " bit13 " is not zero Under be confirmed as exception.
In the first embodiment, communication controler 30 communication monitoring processing in all inter-packet gaps, even-odd check, Header, clock number and data are all confirmed as determining that the first transmission packet has been received normally in normal situation.In addition, communication control Device 30 processed is determined in the case where at least one of inter-packet gap, even-odd check, header, clock number and data are confirmed as exception First transmission packet is not yet received normally.By executing communication monitoring processing, communication controler 30 can determine the first transmission packet Whether it has been received normally, and the reliability of the communication between microcomputer 22 and communication controler 30 can be improved.
In the case where communication controler 30 determines that the first transmission packet has been received normally in step S130, S140, lead to Letter controller 30 determines that RG setting transmission order is successfully executed (step S150).On the other hand, it is determined in communication controler 30 In the case that first transmission packet is not yet received normally, communication controler 30 executes RG default return processing (step S160), and And determine that RG setting transmission order executes failure (step S170).In RG default return processing, storage unit 33 will be with refusal The corresponding all bit2 to bit13 of information RGi [1] to RGi [12] are re-stored as having value 0, and reflect that unit 34 will All refusal signal RG [1] are set as low level signal to RG [12].
When completing the execution of RG setting transmission order in the step s 120, transmission order is arranged according to RG in microcomputer 22 Operation (step S180, S190) is checked to executing from received first response bag of communication controler 30.Fig. 8 shows the first response One example of the scope of examination of packet.As shown in figure 8, microcomputer 22 determines the value of bit0 when checking the first response bag Whether the value for being 1, bit1 whether the value for being 0, bit2 to bit13 whether with the first transmission packet delivery value is consistent and bit14 Value whether be 1.
The value of bit0 is 1, the value of bit1 is 0, the value of bit2 to bit13 with first transmission packet delivery value it is consistent and In the case that the value of bit14 is 1, the inspection result of the first response bag is OK.It on the other hand, is 0 or bit1 in the value of bit0 Value be 1 or bit2 to bit13 at least one of value and the first transmission packet delivery value is inconsistent or bit14 In the case that value is 0, the inspection result of the first response bag is NG.Operation, miniature calculating are checked by executing to the first response bag Machine 22 can determine RG setting transmission order, and whether it is executed normally, and microcomputer 22 and communication controler 30 can be improved Between communication reliability.
In the case that the inspection result of the first response bag is OK in step S180, S190, microcomputer 22 prepares (wound Build) the second transmission packet, to prepare RG setting reflection order (step S200), and microcomputer 22 and communication controler 30 are held Row RG setting reflection order (step S210).Reflection order is set according to RG, the second transmission packet is sent to by microcomputer 22 Communication controler 30.In communication controler 30, receiving unit 31 receives and latches the second transmission packet, and reflects that unit 34 will Refusal signal RG [1] is reflected in into RG [12] according to the refusal information RGi [1] to RGi [12] that transmission order storage is arranged in RG, Response unit 32 sends back to microcomputer 22 using the second response bag as B is replied simultaneously.Reflect unit 34 at digital " i " The refusal information RGi [i] of (i:1 to 12) be will refuse signal RG [i] in the case where value 0 to be set as low level signal, and High level signal is set by refusal signal RG [i] in the case where refusing information RGi [i] as value 1.
Fig. 9 and Figure 10 shows an example of the content of the second transmission packet and the second response bag, and Figure 11 is shown One example of the communication mode that reflection order carries out is set between microcomputer 22 and communication controler 30 according to RG.Such as figure Shown in 9 and Figure 10, each of the second transmission packet and the second response bag are all to have 15 (15 bits of bit0 to bit14) Packet.
The second transmission packet will be described in detail.Bit0 is start bit, and is arranged to value 1 in the first embodiment. Bit1 is command bit (meaning that discussed packet is the position of RG setting reflection order), and is arranged in the first embodiment Value 1.Bit2 to bit13 is the command bit as bit1, and is arranged to value 0 in the first embodiment.Bit14 is odd Even parity bit, and be arranged based on predetermined form such as even parity check or odd.
The second response bag will be described in detail.Bit0 is start bit, and is arranged to value 1 in the first embodiment. Bit1 is to return to the value for the bit1 for transmitting packet from microcomputer 22 received second as it is using this with bottom. Bit2 to bit13 be instruction reflection 34 pairs of unit refusal signal RG [1] to RG [12] reflection result position.Bit2 to bit13 Each of be arranged to value 0 in the case where refusal signal is low level signal accordingly, and in corresponding refusal letter Number to be arranged to value 1 in the case where high level signal.The upper order of bit14 instruction (RG setting transmission order above) is held Row result.Bit14 is arranged to value 1 in the case where a upper order is successfully executed, and executes failure in a upper order In the case of be arranged to 0.
As shown in figure 11, reflection order is arranged according to RG between microcomputer 22 and communication controler 30 to be communicated When, it is micro- after chip select signal is switched to low level signal from the high level signal of logic level by microcomputer 22 Type computer 22 is exported by switching between the low level signal and high level signal of logic level as clock signal The signal of 16 clocks (pulse) with clock cycle Tc, then switches to high level signal for chip select signal.In addition, Microcomputer 22 at the following time wrapped (such as above in figure 9 and in figure 10 with the second transmission of sequence transmission of bit0 to bit14 by section Described packet): half week from the substantially early clock cycle Tc of rising of first clock than clock signal of the period The time point of phase to time substantially identical with the 15th decline of clock of clock signal.In communication controler 30, connect Unit 31 is received to rise the corresponding time at position that identification and latching just is being received corresponding to clock signal (bit0 is extremely Bit14), and in the case where bit2 is being received to bit13, reflection unit 34 will be responsive to RG setting transmission order and The refusal information RGi [1] to RGi [12] of storage is reflected in refusal signal RG [1] to RG [12].In addition, communication controler 30 Response unit 32 section with the sequence of bit0 to bit14 sends back the second response bag (as above in Fig. 9 and Figure 10 at the following time Described in packet): the period basically the time identical with the decline of first clock of clock signal to substantially Time identical with the 16th decline of clock of clock signal.
When completing the execution of RG setting reflection order in step S210 in this way, in the execution of communication controler 30 The communication monitoring in face handles (referring to Fig. 7), to determine whether the second transmission packet has been received normally (step S220, S230).It is logical The processing of execution communication monitoring is crossed, communication controler 30 can determine whether the second transmission packet has been received normally, and can mention The reliability of communication between high microcomputer 22 and communication controler 30.
In the case where communication controler 30 determines that the second transmission packet has been received normally in step S220, S230, lead to Letter controller 30 determines that RG setting reflection order is successfully executed (step S240).On the other hand, it is determined in communication controler 30 In the case that second transmission packet is not yet received normally, communication controler 30 executes RG default return processing as described above (step S250), and determine that RG setting reflection order executes failure (step S260).
Then, whether communication controler 30 is interrupted (step by the determining communication with microcomputer 22 of inter-packet gap monitoring Rapid S270).When the determining communication with microcomputer 22 of communication controler 30 is not interrupted, it is back to the beginning of routine.? It is back to after beginning, the RG setting transmission order in the step S120 of the pending subsequent cycle such as communication controler 30.It is another Aspect, in the case where the determining communication with microcomputer 22 of communication controler 30 is interrupted, it executes RG default above Return handles (step S280), and the routine terminates.
When completing the execution of the RG setting reflection order in step S210, reflection life is arranged according to RG in microcomputer 22 It enables and executes inspection operation (step S290, S300) to from received second response bag of communication controler 30.Figure 12 shows second One example of the scope of examination of response bag.As shown in figure 12, when checking the second response bag, microcomputer 22 determines bit0 Value whether the value for being 1, bit1 whether the value for being 1, bit2 to bit13 whether with the first transmission packet (RG setting transmission order) Delivery value is consistent and whether the value of bit14 is 1.
The value of bit0 is 1, the value of bit1 is 1, the value of bit2 to bit13 and the first transmission packet (RG setting transmission order) In the case that delivery value is consistent and the value of bit14 is 1, the inspection result of the second response bag is OK.On the other hand, in bit0 Value be 0 or the value of bit1 be 0 or the delivery value of at least one of the value of bit2 to bit13 and the first transmission packet or In the case that value (delivery value of RG setting transmission order) inconsistent or bit14 value is 0, the inspection result of the second response bag For NG.Operation is checked by executing to the second response bag, and microcomputer 22 can determine RG setting transmission order and RG setting Whether reflection order is performed normally (whether normally reflection refuses information RGi [1] to RGi to refusal signal RG [1] to RG [12] [12]), and the reliability of the communication between microcomputer 22 and communication controler 30 can be improved.
In the case that the inspection result of the second response bag is OK in step S290, S300, number of retries " k " is arranged to Value 0 (step S310), and control and be back to step S100.In this way, microcomputer 22 and communication controler 30 are handed over Replace and be repeatedly carried out RG setting transmission order and RG setting reflection order, so as to will refuse information RGi [1] to RGi [12] from Microcomputer 22 is sent to communication controler 30, and communication controler 30 will refuse information RGi [1] to RGi [12] reflection In refusal signal RG [1] into RG [12].Then, closing unit 40 is based on the fault-signal FAIL from power conversion circuit 12 [1] the refusal signal RG [1] to RG [12] to FAIL [12] and from communication controler 30 sets protection control signal to Drive grant commands or shutdown command.
In the case that the inspection result of the first response bag is NG in step S180, S190, or in step S290, S300 In the second response bag inspection result be NG in the case where, number of retries " k " is compared (step S320) with threshold value kref. In the case where number of retries " k " is less than threshold value kref, number of retries " k " value added 1 (step S330), and control and be back to Step S100.Here, for example, value 3, value 4 or value 5 are used as threshold value kref.Number of retries " k " is equal to threshold value in step s 320 In the case where kref, the exception of the communication between (confirmation) microcomputer 22 and communication controler 30 is detected, and miniature Recording exceptional history (step S340) in the record area (not shown) of the RAM of computer 22 etc., and the routine terminates.It utilizes The exception history being so recorded in the RAM of microcomputer 22, can make operator know exception history during maintenance.
Figure 13 shows an example of the operation of power conversion circuit 12 and electronic control unit 20.As shown in figure 13, (before time t 1) when power conversion circuit 12 does not break down, rejector circuit 42 enables fault-signal, and from true The protection control signal of circuit 44 is determined for driving grant commands, so as in the control according to the switching command from microcomputer 22 Make lower driving power conversion circuit 12.At this point, without communicating between microcomputer 22 and communication controler 30.
When power conversion circuit 12 breaks down (time t1), since rejector circuit 42 enables fault-signal, since Become shutdown command from the protection control signal for determining circuit 44, and stops the driving of power conversion circuit 12.At this point, miniature Also without communicating between computer 22 and communication controler 30.
It is micro- when microcomputer 22 determines that it refuses from any fault-signal of power conversion circuit 12 (time t2) Type computer 22 and communication controler 30 execute RG setting transmission order (transmission the first transmission packet and the first response bag, storage packet Include the refusal information in the first transmission packet), then execute RG setting reflection order (transmission the second transmission packet and the second response Packet, will be on refusal message reflection to refusal signal).Then, rejector circuit 42 refuses fault-signal, and from determining circuit 44 Protection control signal become driving grant commands so that restoring drive by means of microcomputer 22 to power conversion circuit 12 Dynamic control.Hereafter, alternately and RG setting transmission order and RG setting is repeatedly carried out in microcomputer 22 and communication controler 30 Reflection order.In this way, reflect refusal information with refusing signal sequence.
The electronic control unit 20 of first embodiment as described above includes microcomputer 22, communication controler 30 With closing unit 40, and communication controler 30 and closing unit 40 are formed on ASIC (chip).Power conversion circuit 12 and closing unit 40 connected via " n " item (number of the fault type of power conversion circuit 12) signal wire 18, and communicate Controller 30 and closing unit 40 are connected via " n " signal line 38, and microcomputer 22 and communication controler 30 via It is connected in number less than four communication lines 24 of " n " item.Therefore, can make to connect microcomputer 22 and communication controler 30 The number of communication line 24 is relatively small, and the number of communication line 24 is in the number (failure of power conversion circuit 12 of signal wire 18 The number of type) it may be less likely in increased situation or be less likely to increase.Therefore, failure rate may be less likely to or be less likely to increase Add.In addition, the number of the signal wire 18 for fault-signal FAIL [1] to FAIL [n] is equal to for refusing signal RG [1] to RG The number of the signal wire 38 of [n]；Therefore, in the case where one of signal wire 38 is abnormal (for example, it is fixed to high level Signal), it prevents from refusing two or more fault-signals FAIL [1] to FAIL [n].
In the electronic control unit 20 of first embodiment, RG setting transmission order or RG setting reflection order are completed Execution in the case where, communication controler 30 determined by communication monitoring processing the first transmission packet or second transmission packet whether It is received normally.In addition, in the case where completing the execution of RG setting transmission order or RG setting reflection order, microcomputer 22 pair of first response bag or the second response bag, which execute, checks operation.In this way it is possible to improve microcomputer 22 with communicate The reliability of communication between controller 30.In addition, when the communication generation between microcomputer 22 and communication controler 30 is different Chang Shi, it is possible to specify the position for the packet being abnormal.
In the electronic control unit 20 of first embodiment, communication controler 30 completes RG setting transmission order or RG Communication monitoring processing is executed when the execution of reflection order is set.However, it is possible to not execute communication monitoring processing.
In the electronic control unit 20 of first embodiment, microcomputer 22 completes RG setting transmission order or RG The first response bag or the second response bag are executed when the execution of reflection order is set and check operation.However, it is possible to not answer first It answers packet or the second response bag executes and checks operation.
In the electronic control unit 20 of first embodiment, microcomputer 22 and communication control as shown in Figure 3 are executed The control routine of device 30 processed.However, it is possible to execute the control example of microcomputer 22 and communication controler 30 as shown in figure 14 Journey replaces the control routine of Fig. 3.In addition to execute step S400 to S430 come replace step S110 to S210, S290 and S300 with Outside, the control routine of Figure 14 and the control routine of Fig. 3 are identical.Therefore, identical number of steps is assigned to identical operation, will Its detailed description is not provided.
In the control routine of Figure 14, microcomputer 22 creates refusal information RGi [1] to RGi in the step s 100 [12], and the third transmission packet for including refusal information RGi [1] to RGi [12] is created, to prepare RG setting command (step S400).Then, microcomputer 22 and communication controler 30 execute RG setting command (step S410).By executing RG setting Third transmission packet is sent to communication controler 30 by order, microcomputer 22.In communication controler 30, receiving unit 31 is connect Third transmission packet is received and latches, and the storage of storage unit 33 includes the refusal information RGi [1] to RGi in third transmission packet [12].In addition, refusal information RGi [1] is reflected in by reflection unit 34 to RGi [12] refuses signal RG [1] into RG [12], and And response unit 32 sends back to microcomputer 22 using third response bag as C is replied.
Figure 15 shows an example of the content of third transmission packet and third response bag.As shown in figure 15, third transmits Each of packet and third response bag all have 15 (bit0 to bit14).Third transmission packet is and above first transmits (referring to fig. 4 and Fig. 5) identical packet is wrapped, and third response bag is and the second response bag (referring to Fig. 9 and Figure 10) phase above Same packet.In addition, between microcomputer 22 and communication controler 30 according to RG setting command carry out communication with with lower section Formula identical mode executes: where uses " third transmission packet " instead of " the first transmission packet " of Fig. 6, and uses that " storage is single Member and reflection unit " replacement " storage unit ", while using " third response bag " replacement " the first response bag ".
When completing the execution of RG setting command in step S410, communication controler 30 is carried out to above step S220. In this case, to transmit the identical mode of mode (referring to Fig. 7) after the execution ordered with immediately in completion RG setting To execute the bag data monitoring in communication monitoring processing (referring to Fig. 7).
In addition, microcomputer 22 is according to RG setting command pair when completing the execution of RG setting command in step S410 It is executed from the received third response bag of communication controler 30 and checks operation (step S420, S430).Figure 16 shows third response One example of the scope of examination of packet.As shown in figure 16, in the inspection operation to third response bag, microcomputer 22 is determined The value of bit0 whether the value for being 1, bit1 whether the value for being 1, bit2 to bit13 whether with third transmission packet delivery value it is consistent, And whether the value of bit14 is 1.
The value of bit0 is 1, the value of bit1 is 1, the delivery value of the value of bit2 to bit13 and third transmission packet is consistent and In the case that the value of bit14 is 1, the inspection result of third response bag is OK.It on the other hand, is 0 or bit1 in the value of bit0 Value be at least one of 0 or bit2 to bit13 and the corresponding delivery value of third transmission packet is inconsistent or bit14 In the case that value is 0, the inspection result of third response bag is NG.Operation, miniature calculating are checked by executing to third response bag Machine 22 can determine whether RG setting command is performed normally, and can be improved microcomputer 22 and communication controler 30 it Between communication reliability.
In the case that the inspection result of third response bag is OK in step S420, S430, microcomputer 22 is carried out extremely Above step S310.On the other hand, it is micro- in the case that the inspection result of third response bag is NG in step S420, S430 Type computer 22 is carried out to above step S320.
RG setting command is repeatedly carried out in microcomputer 22 and communication controler 30, so that in first embodiment one Sample will refuse information RGi [1] and be sent to communication controler 30, and communication controler 30 to RGi [12] from microcomputer 22 Refusal information RGi [1] is reflected in RGi [12] and refuses signal RG [1] into RG [12].Then, closing unit 40 is based on coming From the fault-signal FAIL [1] to FAIL [12] of power conversion circuit 12 and the refusal signal RG from communication controler 30 [1] driving grant commands or shutdown command are set by protection control signal to RG [12].
Figure 17 shows one of the operation of power conversion circuit 12 and electronic control unit 20 in the case where modified example A example.In Figure 17, the operation before time t12 is identical as the operation before the time t2 in Figure 13.As shown in figure 17, exist Microcomputer 22 determines that it refuses when from any fault-signal of power conversion circuit 12 (time t12), microcomputer 22 and communication controler 30 execute RG setting command (transmission third transmission packet and third response bag, storage is included in third transmission Refusal information in packet, and message reflection will be refused on refusal signal).Then, rejector circuit 42 refuses fault-signal, and And the protection control signal from determining circuit 44 becomes driving grant commands, so that restoring through microcomputer 22 to electric power The drive control of conversion circuit 12.Hereafter, RG setting command is repeatedly carried out in microcomputer 22 and communication controler 30.Cause This, reflects refusal information to refusal signal sequence.
In the electronic control unit 20 of modified example, communication controler 30 is executed when completing the execution of RG setting command Communication monitoring processing.However, it is possible to not execute communication monitoring processing.
In addition, microcomputer 22 is in the execution for completing RG setting command in the electronic control unit 20 of modified example When to third response bag execute check operation.Operation is checked however, it is possible to not execute to third response bag.
In the electronic control unit 20 of first embodiment, as shown in Fig. 2, microcomputer 22 and communication controler 30 It is connected via four communication lines (CS, CLK, SDI, SDO) 24.Also that is, communication physical layer, which is arranged to, realizes four line serial communications. But as shown in the electronic control unit 20B of the modified example of Figure 18, microcomputer 22 and communication controler 30 can be through By three communication line (CLK, SDI, SDO) 24B connections, that is, communication physical layer, which can be arranged, realizes three line serial communications.This Outside, as shown in the electronic control unit 20C of the modified example of Figure 19, microcomputer 22 and communication controler 30 can be via two Communication line (T × D, R × D) 24C connection, that is, communication physical layer can be arranged offer uart (UART) (asynchronous serial communication).In addition, as shown in the electronic control unit 20D of the modified example of Figure 20, microcomputer 22 It can be connected via the single communication line 24D for two-way communication with communication controler 30.Also that is, communication physical layer can be by cloth It is set to and a line (two-way communication data/address bus) is provided.
Second embodiment
Next, electronic control unit 120 according to the second embodiment of the present invention will be described.Figure 21 schematically shows The configuration of the electronic control unit 120 of second embodiment is gone out.In addition to microcomputer 22 and communication controler 30 are via three Communication line (CS, CLK, SDI) 124 and a signal line 125 connection rather than via four communication lines (CS, CLK, SDI, SDO) other than 24 connections, the electronics control of the electronic control unit 120 of second embodiment and first embodiment as shown in Figure 2 Unit 20 processed is identical.Therefore, identical appended drawing reference is assigned to electronics identical with the constituent element of electronic control unit 20 The constituent element of control unit 120, and will not provide the detailed description to these elements.It is miniature in electronic control unit 120 Computer 22 does not receive any packet from communication controler 30.Utilize this arrangement, it is possible to reduce microcomputer 22 is for communicating Resource, to reduce the cost of microcomputer 22, and increase the selection of microcomputer 22.On the other hand, miniature It, can not be such as the electronic control of first embodiment in the case that communication between computer 22 and communication controler 30 is abnormal The position of the packet being abnormal specified like that in unit 20.
In electronic control unit 120, the control of microcomputer 22 and communication controler 30 as shown in Figure 22 is executed Routine processed, to replace the control routine of microcomputer 22 and communication controler 30 as shown in Figure 3.In addition to executing step S500 It is replaced to S700 other than step S110 to S210, S290 and S300, the control routine of Figure 22 and the control routine of Fig. 3 are identical. Therefore, identical number of steps is assigned to identical operation, will not provide its detailed description.In this second embodiment, with It is the same in first embodiment, indicate that the value " n " of the number of the fault type in power conversion circuit 12 is also 12.
In the routine of Figure 22, microcomputer 22 creates refusal information RGi [1] to RGi [12] in the step s 100, and And creation includes fourth packet of refusal information RGi [1] to RGi [12], to prepare RG setting transmission order (step S500). Then, microcomputer 22 and communication controler 30 execute RG setting transmission order (step S510).It should using what is so executed 4th packet is sent to communication controler 30, and communication controler 30 by the RG setting transmission order of routine, microcomputer 22 Receiving unit 31 receive and latch the 4th packet.
Figure 23 show the content of the 4th packet, the 5th packet (later will description) and the 6th packet (will describe later) one shows Example.As shown in figure 23, the 4th packet have 15 (bit0 to bit14), and be and first transmission packet (referring to fig. 4 and Fig. 5) phase Same packet.In addition, the logical of transmission order progress is arranged according to the RG of the routine between microcomputer 22 and communication controler 30 Letter is carried out in substantially the same mode in a manner of Fig. 6, wherein is used " the 4th packet " replacement " the first transmission packet ", and is deleted Except " storage unit " and " the first response bag ".
When completing the execution of RG setting transmission order in step S510, communication controler 30 executes communication monitoring above It handles (referring to Fig. 7), to determine whether the 4th packet has been received normally (step S520, S530).By executing at communication monitoring Reason, communication controler 30 can determine the 4th packet whether be received normally, and can be improved microcomputer 22 with communicate The reliability of communication between controller 30.
In the case where communication controler 30 determines that the 4th packet has been received normally in step S520, S530, storage is single 33 storage of member includes the refusal information RGi [1] to RGi [12] (step S540) in the 4th packet.On the other hand, in communication control In the case that device 30 determines that the 4th packet is not yet received normally, communication controler 30 is executed at RG default return as described above It manages (step S550).
In step S510 complete RG setting transmission order execution when, microcomputer 22 creation the 5th packet, with to Prepare RG setting reflection order (step S560), and microcomputer 22 and communication controler 30 execute RG setting reflection order (step S570).According to the RG of the routine, reflection order is set, the 5th packet is sent to communication controler 30 by microcomputer 22, And the receiving unit 31 of communication controler 30 receives and latches the 5th packet.As shown in figure 23, the 5th packet have 15 (bit0 is extremely It bit14), and is to wrap (referring to Fig. 9 and Figure 10) identical packet with the second transmission.In addition, microcomputer 22 and communication control Communication substantially similar way progress in a manner of with Fig. 6 that reflection order carries out is arranged according to the RG of the routine between device 30, Wherein, " the 5th packet " replacement " the first transmission packet " is used, and deletes " storage unit " and " the first response bag ".
When completing the execution of RG setting reflection order in step S570, communication controler 30 executes communication monitoring above It handles (referring to Fig. 7), so that it is determined that whether the 5th packet has been received normally (step S580, S590).Utilize what is so executed Communication monitoring processing, communication controler 30 can determine whether the 5th packet has been received normally, and miniature calculating can be improved The reliability of communication between machine 22 and communication controler 30.
In the case where communication controler 30 determines that the 5th packet has been received normally in step S580, S590, reflection is single The refusal information RGi [1] to RGi [12] stored in step S540 or step S550 is reflected in refusal signal RG [1] by member 34 Into RG [12] (step S600).On the other hand, in the case where communication controler 30 determines that the 5th packet is not yet received normally, Communication controler 30 executes RG default return processing (step S610) as described above.
In step S570 complete RG setting reflection order execution when, microcomputer 22 creation the 6th packet, with to Prepare RG setting and checks order (step S620).Microcomputer 22 and communication controler 30 execute RG setting and check order (step Rapid S630).It is arranged according to RG and checks order, the 6th packet is sent to communication controler 30 by microcomputer 22, and communicates control The receiving unit 31 of device 30 processed receives and latches the 6th packet.
As shown in figure 23, the 6th packet has 15 (bit0 to bit14), and will be described more specifically.Bit0 and Bit1 means start bit and command bit (meaning that RG setting checks order) as combination, and in this second embodiment bit0 and Both bit1 both are set to value 0.Bit2 to bit13 be refuse information RGi [1] to RGi [12] reverse value position.bit14 It is parity check bit.In addition, between microcomputer 22 and communication controler 30 according to the RG of the routine setting check order into Capable communication substantially similar way in a manner of with Fig. 6 carries out, wherein it uses " the 6th packet " replacement " the first transmission packet ", and And delete " storage unit " and " the first response bag ".
When completing the execution of RG setting inspection order in step S630, communication controler 30 executes communication monitoring above It handles (referring to Fig. 7), so that it is determined that whether the 6th packet has been received normally (step S640, S650).Figure 24 shows this In the case of communication monitoring processing content an example.It (is added to using RG in addition to the content of bag data monitoring is changed The extremely determining content for checking order is set) other than, the content of communication monitoring processing and the communication monitoring of Fig. 7 of Figure 24 is handled Content it is identical.As shown in figure 24, in bag data monitoring in this case, as soon as often receive packet, monitoring data Position, and after the execution for completing RG setting inspection order, for bit2 to bit13, storage value (is stored in storage Refusal information RGi [1] to RGi [12] in unit 33, the refusal information RGi [1] substantially stored in step S540 is extremely RGi [12]) (it is arranged by receiving unit 31 according to RG with latched value and checks the refusal information RGi [1] to RGi [12] for ordering latch) It is compared.In the case where all storage values of bit2 to bit13 and these inconsistent latched value, communication controler 30 Determine that the 6th packet has been received normally.It is consistent in the corresponding latched value of the storage value of bit2 at least one of bit13 In the case where, communication controler 30 determines that the 6th packet is not yet received normally.By executing communication monitoring processing, communication controler 30 can determine whether the 6th packet has been received normally, and can be improved between microcomputer 22 and communication controler 30 The reliability of communication.
In the case where communication controler 30 determines that the 6th packet has been received normally in step S640, S650, communication control Device 30 processed prepares OK mark (step S660).On the other hand, when communication controler 30 determines that the 6th packet is not yet received normally, Communication controler 30 executes RG default return processing (step S670) above, and prepares NG mark (step S680).
Then, communication controler 30 indicates OK via signal wire 125 or NG mark is exported to 22 (step of microcomputer S690), and carry out to above step S270.In this second embodiment, by the way that the voltage level of signal wire 125 to be arranged Indicate for high level to generate OK, and generates NG mark by setting low level for the voltage level of signal wire 125.This Outside, during the period of time for executing step S690 to first time in the time started from system, by by the electricity of signal wire 125 Voltage level is set as high level to generate OK mark.
Microcomputer 22 determines that from the received mark of communication controler 30 be OK mark or NG mark (step S700). In the case where mark is OK mark, microcomputer 22 enters to step S310.On the other hand, in the feelings that mark is NG mark Under condition, microcomputer 22 enters to step S320.Using the step S700 so executed, microcomputer 22 can be determined and be refused Whether exhausted information RGi [1] to RGi [12] is normally reflected by refusal signal RG [1] to RG [12], and miniature calculating can be improved The reliability of communication between machine 22 and communication controler 30.
Microcomputer 22 and communication controler 30 be repeated in execute RG setting transmission order, RG setting reflection order and RG setting checks order, to refuse information RGi [1] as in first embodiment to RGi [12] from microcomputer 22 are sent to communication controler 30, and refusal information RGi [1] to RGi [12] is reflected in refusal signal by communication controler 30 RG [1] is in RG [12].Then, closing unit 40 is based on the fault-signal FAIL [1] to FAIL from power conversion circuit 12 [12] protection control signal is set driving grant commands by the refusal signal RG [1] to RG [12] and from communication controler 30 Or shutdown command.
Figure 25 show the operation of the power conversion circuit 12 and electronic control unit 120 of second embodiment one shows Example.In Figure 25, the operation before time t22 is identical as the operation before the time t2 in Figure 13.As shown in figure 25, when miniature Computer 22 determines that it refuses when from any fault-signal of power conversion circuit 12 (time t22), 22 He of microcomputer Communication controler 30 executes RG setting transmission order (the 4th packet of transmission), and the storage of communication controler 30 is included in the 4th packet Refusal information.In addition, microcomputer 22 and communication controler 30 execute RG setting reflection order (the 5th packet of transmission), and Communication controler 30 will refuse message reflection in refusal signal.Then, rejector circuit 42 refuses fault-signal, electric from determining The protection control signal on road 44 becomes driving grant commands, and microcomputer 22 restores the driving to power conversion circuit 12 Control.Then, microcomputer 22 and communication controler 30 execute RG setting and check order (the 6th packet of transmission), and communicate control Device 30 processed indicates OK or NG mark is exported to microcomputer 22.
The electronic control unit 120 of second embodiment as described above includes miniature as in first embodiment Computer 22, communication controler 30 and closing unit 40, and communication controler 30 and closing unit 40 are formed in ASIC (one Chip) on.Power conversion circuit 12 and closing unit 40 are via " n " item (number of the fault type in power conversion circuit 12) Signal wire 18 connects, and communication controler 30 and closing unit 40 are connected via " n " signal line 38, while microcomputer 22 and communication controler 30 via in number be less than " n " item four lines (three communication lines 124 and a signal line 125) even It connects.Using this arrangement, the communication line 124 for connecting microcomputer 22 and communication controler 30 and signal wire 125 can be made Sum is relatively small, and the number of communication line 124 and signal wire 125 is in the number (in power conversion circuit 12 of signal wire 18 The number of fault type) it may be less likely in increased situation or be less likely to increase.Therefore, failure rate may be less likely to or less may be used It can increase.Further, since the number of the signal wire 18 for fault-signal FAIL [1] to FAIL [n] is equal to for refusing signal The number of the signal wire 38 of RG [1] to RG [n], therefore in the case where one of signal wire 38 is abnormal (for example, it is fixed For high level signal), it prevents from refusing two or more fault-signals FAIL [1] to FAIL [n].
In the electronic control unit 120 of second embodiment, RG setting transmission order, RG setting reflection order are completed Or RG setting check order execution when, communication controler 30 execute communication monitoring processing, with so that it is determined that the 4th packet, the 5th packet Or the 6th packet whether be received normally.In addition, communication controler 30 executes logical when completing the execution of RG setting inspection order Believe monitoring processing, OK mark or NG mark is exported to microcomputer 22, and microcomputer 22 is determined and controlled from communication The received mark of device 30 processed is OK mark or NG mark.Using these arrangement, can be improved microcomputer 22 with communicate control The reliability of communication between device 30 processed.
In the electronic control unit 120 of second embodiment, the execution ordered and communication are checked when completing RG setting Controller 30 execute communication monitoring processing when, by for bit2 to bit13 by storage value (value stored by storage unit 33, The value substantially stored in step S540) (it is arranged by receiving unit 31 according to RG with latched value and checks the value for ordering latch) It is compared to monitor the data bit of each packet, as shown in figure 24.In all storage values and the corresponding latch of bit2 to bit13 Be worth it is inconsistent in the case where, communication controler 30 determine bag data be normal.In depositing for bit2 at least one of bit13 For Stored Value under corresponding latched value unanimous circumstances, communication controler 30 determines that bag data is abnormal.But extremely about bit2 Value corresponding with the refusal reflection result of signal RG [1] to RG [12] (can be high level letter in refusal signal by bit13 It is value 1 in the case where number, is value 0 in the case where refusal signal is low level signal) it is compared with storage value, and communicate Controller 30 can be under value corresponding with the reflection result about all bit2 to bit13 and storage value unanimous circumstances really Determine bag data be it is normal, and communication controler 30 can with the reflection result about bit2 at least one of bit13 Determine that bag data is abnormal in the case that corresponding value and storage value are inconsistent.It, can be in addition, about bit2 to bit13 Value corresponding with the refusal reflection result of signal RG [1] to RG [12] is compared with latched value, and communication controler 30 can it is corresponding with the reflection result about all bit2 to bit13 value under corresponding latched value unanimous circumstances Determine that bag data is normal, and can be in value corresponding with the reflection result about bit2 at least one of bit13 Determine that bag data is abnormal in the case where inconsistent with corresponding latched value.
In the electronic control unit 120 of second embodiment, RG setting transmission order, RG setting reflection order are completed In the case where the execution for checking order is arranged with RG, communication controler 30 executes communication monitoring processing.However, it is possible to not execute logical Believe monitoring processing.In addition, in this second embodiment, communication controler 30 is completed to execute when RG setting checks the execution of order Communication monitoring processing, and OK mark or NG mark are exported to microcomputer 22.But communication controler 30 can not incite somebody to action OK mark or NG mark are exported to microcomputer 22.
In the electronic control unit 120 of second embodiment, microcomputer 22 and communication as shown in figure 22 are executed The control routine of controller 30.Instead of the routine, microcomputer 22 and communication controler 30 as shown in figure 26 can be executed Control routine.In addition to executing step S800 to S870 come other than replacing step S500 to S680, the control routine and figure of Figure 26 22 control routine is identical.Therefore, identical number of steps is assigned to identical operation, will not provide its detailed description.
In the control routine of Figure 26, microcomputer 22 creates refusal information RGi [1] to RGi in the step s 100 [12], and the 7th packet for including refusal information RGi [1] to RGi [12] is created, to prepare RG setting command (step S800).Then, microcomputer 22 and communication controler 30 execute RG setting command (step S810).According to the RG of the routine 7th packet is sent to communication controler 30, and the receiving unit 31 of communication controler 30 by setting command, microcomputer 22 It receives and latches the 7th packet.7th packet is and above first wraps (referring to fig. 4 and Fig. 5) identical packet.In addition, microcomputer Between 22 and communication controler 30 according to the RG setting command of the routine carry out communication in a manner of with Fig. 6 identical mode into Row, wherein use " the 7th packet " replacement " the first transmission packet ", and delete " storage unit " and " the first response bag ".
When completing the execution of RG setting command in step S810, communication controler 30 executes communication monitoring processing above (referring to Fig. 7), to determine whether the 7th packet has been received normally (step S820, S830).In this case, at communication monitoring Bag data in reason is monitored to be held by with immediately in identical mode in a manner of the execution that RG setting transmission is ordered executes later of completing Row.By executing communication monitoring processing, communication controler 30 can determine whether the 7th packet has been received normally, and can mention The reliability of communication between high microcomputer 22 and communication controler 30.
In the case where communication controler 30 determines that the 7th packet has been received normally in step S820, S830, storage is single 33 storage of member includes the refusal information RGi [1] to RGi [12] in the 7th packet, and reflects that unit 34 will refuse information RGi [1] refusal signal RG [1] is reflected in into RG [12] (step S840) to RGi [12], to prepare OK mark (step S850). On the other hand, in the case where communication controler 30 determines that the 7th packet is not yet received normally, communication controler 30 is executed above RG default return processing (step S860), with prepare NG mark (step S870).
Then, communication controler 30 indicates OK via signal wire 125 or NG mark is exported to 22 (step of microcomputer S690), and carry out to above step S270.In addition, microcomputer 22 is from 30 reception flag of communication controler, and into It goes to step S700.
RG setting command is repeatedly carried out in microcomputer 22 and communication controler 30, so that such as that in first embodiment Sample will refuse information RGi [1] and be sent to communication controler 30, and communication controler 30 to RGi [12] from microcomputer 22 Refusal information RGi [1] is reflected in RGi [12] and refuses signal RG [1] into RG [12].Then, closing unit 40 is based on coming From the fault-signal FAIL [1] to FAIL [12] of power conversion circuit 12 and the refusal signal RG [1] from communication controler 30 Control signal will be protected to be set as driving grant commands or shutdown command to RG [12].
Figure 27 show the operation of the power conversion circuit 12 and electronic control unit 120 of the modified example one shows Example.In Figure 27, the operation before time t32 is identical as the operation before the time t2 in Figure 13.As shown in figure 27, when miniature Computer 22 determines that it refuses when from any fault-signal of power conversion circuit 12 (time t32), 22 He of microcomputer Communication controler 30 executes RG setting command (the 7th packet of transmission), and the storage of communication controler 30 includes refusing in the 7th packet Exhausted information, and message reflection will be refused in refusal signal.Then, rejector circuit 42 refuses fault-signal, and from determination The protection control signal of circuit 44 becomes driving grant commands, so that restoring by microcomputer 22 to power conversion circuit 12 Drive control.Then, communication controler 30 indicates OK or NG mark is exported to microcomputer 22.
In the electronic control unit 120 of modified example, communication controler 30 is held when completing the execution of RG setting command The processing of row communication monitoring.However, it is possible to not execute communication monitoring processing.In addition, completing RG setting command in modified example Execution when, communication controler 30 executes communication monitoring processing, and by OK mark or NG mark output to microcomputer 22. However, it is possible to OK mark or NG mark are not sent to microcomputer 22.
In the electronic control unit 120 of second embodiment, microcomputer 22 and communication controler 30 are via three Communication line (CS, CLK, SDI) 124 and a signal line 125 connection.But in the electronics control of modified example as shown in figure 28 In unit 120B processed, microcomputer 22 and communication controler 30 can be connected via three communication lines (CS, CLK, SDI) 124, And microcomputer 22 may be configured to the protection control signal of monitoring signal wire 49.
In this case, the control routine of microcomputer 22 and communication controler 30 as shown in figure 29 is executed, is come Instead of the control routine of microcomputer 22 and communication controler 30 as shown in figure 22.Come in addition to executing step S710, S720 Other than step S630 to S700, the control routine of Figure 29 and the control routine of Figure 22 are identical.Therefore, identical number of steps It is assigned to identical operation, its detailed description will not be provided.
In the control routine of Figure 29, from the execution for completing RG setting reflection order in step S560 by pre- timing Between in the case where T11, microcomputer 22 checks that the protection of signal wire 49 controls signal (step S710), and determines protection control Signal processed is driving grant commands or shutdown command, to determine refusal signal RG [1] to RG [12] whether normally refuse by reflection Exhausted information RGi [1] to RGi [12] (step S720).
Predetermined time T11 is confirmed as the length of following time: the time is in the execution for completing RG setting reflection order Afterwards for the time needed for refusing signal RG [1] to RG [12] reflection refusal information RGi [1] to RGi [12], and in certain journey Predetermined time Tint on degree shorter than for inter-packet gap monitoring.Using step S720, microcomputer 22 can also be such as upper Determine whether normally reflection refuses information RGi [1] to RGi to refusal signal RG [1] to RG [12] in the step S700 in face like that [12], and the reliability of the communication between microcomputer 22 and communication controler 30 can be improved.
Determine that normally information is refused in reflection to refusal signal RG [1] to RG [12] in step S720 in microcomputer 22 In the case where RGi [1] to RGi [12], carry out to above step S310.On the other hand, it determines and refuses in microcomputer 22 In the case where abnormal reflection refusal information RGi [1] to RGi [12] of signal RG [1] to RG [12], carry out to above step S320。
In the electronic control unit 120B of the modified example, microcomputer 22 and communication controler 30 execute Figure 29's Control routine executes step S710, S720 in the control routine of Figure 29 to replace 22 and of microcomputer as shown in figure 22 The step S620 to S700 of the control routine of communication controler 30.But microcomputer 22 and communication controler 30 can be held The control routine of row Figure 30 executes step S710, S720 in the control routine of Figure 30 to replace microcomputer as shown in figure 26 Step S690, S700 of the control routine of calculation machine 22 and communication controler 30.Step S710, S720 in the control routine of Figure 30 Operation it is identical as the operation of step S710, S720 in the control routine of Figure 29.
In the electronic control unit 120B for the modified example being generally noted above, communication controler 30 completes RG setting command Execution when execute communication monitoring processing.However, it is possible to not execute communication monitoring processing.
Third embodiment
Next, electronic control unit 220 according to the third embodiment of the present invention will be described.Figure 31 schematically shows The configuration of the electronic control unit 220 of third embodiment is gone out.In addition to using communication controler 230 to replace communication controler 30 Other than (replacing protection controller 29 using protection controller 229), electronic control unit 220 and Figure 28's of third embodiment Electronic control unit 120B is identical.Therefore, in order to avoid repeated description, identical appended drawing reference is assigned to single with electronic control The identical constituent element of the constituent element of first 120B, and will not provide the detailed description to these elements.It is single in electronic control In member 220, as in the electronic control unit 120 of second embodiment, microcomputer 22 is not from communication controler 230 Receive any packet.Utilize this arrangement, it is possible to reduce resource of the microcomputer 22 for communication, to reduce microcomputer 22 cost, and increase the selection of microcomputer 22.On the other hand, microcomputer 22 and communication controler 230 it Between communication be abnormal in the case where, abnormal send out can not be specified as in the electronic control unit 20 of first embodiment The position of raw packet.
Protection controller 229 is integrally molded communication controler 230 and closing unit 40 by using resin and is configured At module.Communication controler 230 is provided by universal product or combinations thereof, and including as functional block and communication controler 30 The receiving unit receiving unit 31 and monitoring unit 35 similar with monitoring unit and the string value of communication data is converted into The signal conversion unit 231 being worth parallel.Since communication controler 230 is provided by universal product or combinations thereof, can reduce Development cost.On the other hand, since communication controler 230 and closing unit 40 can not be formed on ASIC (chip), because This needs to be formed as communication controler 230 another IC, and using resin by its with close circuit 40 moulded for example with Module is provided, to inhibit the increase of failure rate.
In electronic control unit 220, the control of microcomputer 22 and communication controler 230 as shown in figure 32 is executed Routine.In addition to executing step S900 to S980 come other than replacing step S110 to S210, S290 and S300, the control routine of Figure 32 It is identical as the control routine of Fig. 3.Therefore, identical number of steps is assigned to identical operation, will not provide its detailed description. In the third embodiment, as in first embodiment, the number of the fault type in power conversion circuit 12 is indicated It is worth " n " and is equal to 12.
In the control routine of Figure 32, microcomputer 22 creates refusal information RGi [1] to RGi in the step s 100 [12], and the 8th packet for including refusal information RGi [1] to RGi [12] is created, to prepare RG setting command (step S900).Then, microcomputer 22 and communication controler 230 execute RG setting command (step S910).According to the RG of the routine 8th packet is sent to communication controler 230, and the receiving unit of communication controler 230 by setting command, microcomputer 22 31 receive and latch the 8th packet.8th packet is and (referring to fig. 4 and Fig. 5) identical packet is wrapped in the first transmission above.Miniature calculating The communication carried out between machine 22 and communication controler 230 according to the RG setting command of the routine identical side in a manner of with Fig. 6 Formula executes, wherein uses " the 8th packet " replacement " the first transmission is wrapped ", and deletes " storage unit " and " the first response bag ".
When completing the execution of RG setting command in step S910, the signal conversion unit 231 of communication controler 230 will be wrapped The refusal information RGi [1] to RGi [12] in string value form in the 8th packet is included to be converted into believing in the refusal of parallel value form It ceases RGi [1] to RGi [12].
Then, whether communication controler 230 executes communication monitoring processing (referring to Fig. 7), to determine the 8th packet by just Often receive (step S930, S940).In this case, communication monitoring processing in bag data monitoring with immediately in complete RG The identical mode of mode executed after the execution of transmission order is arranged to execute.It is handled, is led to using the communication monitoring so executed Letter controller 230 can determine whether the 8th packet has been received normally, and microcomputer 22 and communication control can be improved The reliability of communication between device 230.
In the case where communication controler 230 determines that the 8th packet has been received normally in step S930, S940, signal turns Refusal signal RG [1] will be reflected in into RG [12] by the refusal information RGi [1] to RGi [12] for being worth expression parallel by changing unit 231 (step S950).On the other hand, it in the case where communication controler 230 determines that the 8th packet is not yet received normally, executes above RG default return processing (step S960).
In the case where have passed through predetermined time T21 from the execution for completing RG setting command in step S910, microcomputer Calculation machine 22 checks that the protection of signal wire 49 controls signal (step S970), and determines that protection control signal is driving grant commands Or shutdown command, to determine whether normally information RGi [1] to RGi [12] is refused in reflection to refusal signal RG [1] to RG [12] (step S980).Here, use the time span essentially identical with predetermined time T11 above as predetermined time T21.
Determine that normally information is refused in reflection to refusal signal RG [1] to RG [12] in step S980 in microcomputer 22 In the case where RGi [1] to RGi [12], carry out to step S310.On the other hand, refusal signal RG is determined in microcomputer 22 [1] it in the case where refusing information RGi [1] to RGi [12] to the abnormal reflection of RG [12], carries out to above step S320.
Figure 33 show the operation of the power conversion circuit 12 and electronic control unit 220 of third embodiment one shows Example.In Figure 33, the operation before time t42 is identical as the operation before the time t2 of Figure 13.As shown in figure 33, work as microcomputer Calculation machine 22 determines that it refuses when from any fault-signal of power conversion circuit 12 (time t42), microcomputer 22 and logical Believe that controller 230 executes RG setting command (the 8th packet of transmission), and communication controler 230 is included within the refusal in the 8th packet Information is converted to parallel value from string value, and parallel value is reflected in refusal signal.Then, rejector circuit 42 refuses failure Signal, and the protection control signal from determining circuit 44 becomes driving grant commands, so that restoring to pass through microcomputer The drive control of 22 pairs of power conversion circuits 12.Then, microcomputer 22 check protection control signal while repeatedly Execute RG setting command.
The electronic control unit 220 of third embodiment as described above includes microcomputer 22, communication controler 230 and closing unit 40, and communication controler 230 and closing unit 40 are configured to mould as in first embodiment Block.Then, power conversion circuit 12 and closing unit 40 are via " n " item (equal to the fault type in power conversion circuit 12 Number) signal wire 18 connects, and communication controler 230 and closing unit 40 are connected via " n " signal line 38, and microcomputer Calculation machine 22 and communication controler 230 are connected via three communication lines 124.Therefore, can make connect microcomputer 22 with communicate The number of the communication line 124 of controller 230 is relatively small, and the number of communication line 124 is in the number (electrical power conversion of signal wire 18 The number of fault type in circuit 12) it may be less likely in increased situation or be less likely to increase；Therefore, failure rate is smaller can It can or be less likely to increase.It is used further, since the number of the signal wire 18 for fault-signal FAIL [1] to FAIL [n] is equal to In the number of the signal wire 38 of refusal signal RG [1] to RG [n], the therefore, (example in the case where one of signal wire 38 is abnormal Such as, it is fixed to high level signal), it prevents from refusing two or more fault-signals FAIL [1] to FAIL [n].
In the electronic control unit 220 of third embodiment, when completing the execution of RG setting command, communication controler 230 execute communication monitoring processing, to determine whether the 8th packet has been received normally.In addition, microcomputer 22 monitors signal wire 49 protection controls signal.Using these arrangements, the communication between microcomputer 22 and communication controler 230 can be improved Reliability.
In the electronic control unit 220 of third embodiment, communication controler 230 is in the execution for completing RG setting command The processing of Shi Zhihang communication monitoring.However, it is possible to not execute communication monitoring processing.
In the electronic control unit 220 of third embodiment, microcomputer 22 monitors the protection control of signal wire 49 Signal.However, it is possible to not monitor the protection control signal of signal wire 49.
In first embodiment into third embodiment, in the case where number of retries " k " is equal to threshold value kref, detection Communication abnormality between (confirmation) microcomputer 22 and communication controler 30,230, and exception history is recorded in microcomputer In the storage region (not shown) of the RAM of calculation machine 22 etc..But even if detecting microcomputer 22 and communication controler 30, in the case where the communication abnormality between 230, exception history can not also be stored in the RAM of microcomputer 22.This Outside, in the case where detecting the communication abnormality between microcomputer 22 and communication controler 30,230, warning can be opened Lamp (not shown).
Number in first embodiment into third embodiment, between microcomputer 22 and communication controler 30,230 According to communication by Bao Jinhang.But data communication can be carried out for example by bit stream rather than by wrapping.
In first embodiment and second embodiment, microcomputer 22 is the example of " computer ", and communicates Controller 30 is the example of " communication controler ", and closing unit 40 is the example of " closing circuit ".In the third embodiment, Microcomputer 22 is the example of " computer ", and communication controler 230 is the example of " communication controler ", and closing unit 40 be the example of " closing circuit ".
It is corresponding between the main element of embodiment and main element of the invention described in " summary of the invention " part Relationship is not intended to limit element of the invention described in " summary of the invention " part, because embodiment is only for specifically retouching It states for realizing the example of mode of the invention described in " summary of the invention " part.That is, it should based on retouching in the part It states to explain the present invention described in " summary of the invention " part, and embodiment is described in " summary of the invention " part Specific example of the invention.
Although being described using embodiment for realizing mode of the invention, the present invention is never limited to these Embodiment, but can implement in a variety of manners without departing from the principle of the present invention.
The present invention can be used for the manufacturing of the protection control device of power conversion circuit.

Claims (15)

1. a kind of protection control device for power conversion circuit, the protection control device be characterized in that include:
Computer is configured to: monitor from the power conversion circuit be sent to the first number the first signal wire it is multiple Fault-signal, and refusal information is created, the refusal information indicates that each fault-signal in the fault-signal is to be opened With being still rejected；
Communication controler is configured to: being received via the communication line of the second number from the computer and is believed about the failure The refusal information of each fault-signal in number, and multiple refusal signals are sent to described first based on the refusal information The second signal line of number, second number are less than first number；And
Circuit is closed, is arranged on chip identical with the communication controler or identical module, the closing circuit quilt It is configured to: based on the received fault-signal of first signal wire from first number and from described in first number Second signal line is received to refuse signal to permit the driving to the power conversion circuit or close the electrical power conversion electricity Road.
2. protection control device according to claim 1, which is characterized in that for corresponding with first number every The position of group predetermined number carries out the communication between the computer and the communication controler.
3. protection control device according to claim 1 or 2, which is characterized in that second number is confirmed as constant Value, but regardless of first number how.
4. protection control device according to any one of claim 1 to 3, it is characterised in that:
The computer is configured to: will there is the first bit array respectively including the position for refusing information to be sent to described logical Believe controller, the second bit array is then sent to the communication controler；And
The communication controler is configured to store the position for including in first bit array when receiving first bit array Each of refusal information, and be configured to each of institute's rheme of storage when receiving second bit array The refusal message reflection of position is in the corresponding refusal signal in the refusal signal.
5. protection control device according to claim 4, it is characterised in that:
When receiving first bit array, it respectively includes the refusal information that the communication controler, which is configured to have, The response bit array of position send back to the computer；And
When receiving the response bit array, the computer is configured to: will be in the position for including in first bit array Each of refusal information and the response bit array in include the refusal information of each of position be compared, and When the refusal information in first bit array is consistent with the refusal information in the response bit array, by the second battle array Column are sent to the communication controler.
6. protection control device according to claim 4 or 5, it is characterised in that:
When receiving second bit array, the communication controler is configured to: by the refusal of each of institute's rheme Message reflection sends back to the calculating in the corresponding refusal signal in the refusal signal, and by reflection bit array Machine, it is described reflection bit array have respectively include about it is described refusal signal in each refusal signal reflection result position； And
When receiving the reflection bit array, the computer is configured to: will be in the position for including in first bit array Each of refusal information with include it is described reflection bit array in reflection result be compared.
7. protection control device according to claim 4, it is characterised in that:
The computer is configured to: after second bit array is sent to the communication controler, by third position battle array Column are sent to the communication controler, and it includes refusal information with each of institute rheme that the third bit array, which has respectively, The position of related refusal for information about；And
When receiving the third bit array, the communication controler is configured to: will include in first bit array The refusal for the corresponding position in position for including in the refusal information of each of position and the third bit array is for information about It is compared, and comparison result is sent to the computer via third signal wire.
8. protection control device according to claim 4, it is characterised in that:
The computer is configured to: after second bit array is sent to the communication controler, by third position battle array Column are sent to the communication controler, and it includes refusal information with each of institute rheme that the third bit array, which has respectively, The position of related refusal for information about；And
When receiving the third bit array, the communication controler is configured to: will include in first bit array The refusal of each of the position for including in the refusal information of each of position or the third bit array for information about with The reflection result of refusal information in the corresponding refusal signal in the refusal signal is compared, and via the Comparison result is sent to the computer by three signal wires.
9. protection control device according to any one of claim 1 to 3, it is characterised in that:
The computer is configured to that will there is the bit array respectively including the position for refusing information to be sent to the communication control Device processed；And
When receiving the bit array, the communication controler is configured to: will be every in the position for including in the bit array A refusal message reflection is in the corresponding refusal signal in the refusal signal.
10. protection control device according to claim 9, it is characterised in that:
When receiving the bit array, the communication controler is configured to: by the refusal information of each of institute's rheme It is reflected in the corresponding refusal signal in the refusal signal, and reflection bit array is sent back into the calculating Machine, it is described reflection bit array have respectively include about it is described refusal signal in each refusal signal reflection result position； And
When receiving the reflection bit array, the computer is configured to: will be every in the position for including in the bit array A refusal information with include it is described reflection bit array in reflection result be compared.
11. protection control device according to claim 9, which is characterized in that the communication controler is configured to: via Whether third signal wire transmits the refusal information about each of institute's rheme by the refusal signal to the computer It is described it is corresponding one refusal signal reflection information.
12. the protection control device according to claim 4 or 9, which is characterized in that the computer is configured to: monitoring For permitting the first command signal of the driving to the power conversion circuit or for closing the power conversion circuit Second command signal, first command signal and second command signal are sent to the electric power from the closing circuit and turn Change circuit.
13. protection control device according to any one of claims 4 to 12, which is characterized in that receiving to positioning When array, the communication controler is configured to determine described whether be received normally to oriented array.
14. the protection control device according to any one of claim 5 to 8 and claim 10 to 13, which is characterized in that The computer is configured to: when detecting the exception of the communication between the computer and the communication controler, storage The abnormal testing result.
15. a kind of control method of the protection control device for power conversion circuit, the protection control device includes calculating Machine, communication controler and circuit is closed, the closings circuit is arranged in chip identical with the communication controler or identical In module, the control method be characterized in that include:
Multiple failures of the first signal wire of the first number are sent to from the power conversion circuit by the computer monitor Signal, and refusal information is created, the refusal information indicates that each fault-signal in the fault-signal is to be activated also It is to be rejected；
It is received from the computer about in the fault-signal by the communication controler via the communication line of the second number Each fault-signal refusal information, and multiple refusal signals are sent to by first number based on the refusal information Second signal line, second number be less than first number；And
By the closing circuit based on the received fault-signal of first signal wire from first number and from described The second signal line of first number received refusal signal permits driving or closing to the power conversion circuit The power conversion circuit.
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US20190207509A1 (en) 2019-07-04
KR20190082106A (en) 2019-07-09
EP3506492B1 (en) 2021-10-27
CN109994999B (en) 2021-09-10
BR102018077340A2 (en) 2019-07-16
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JP6927032B2 (en) 2021-08-25
EP3506492A1 (en) 2019-07-03

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